.scroll-chess-background{z-index:-1;pointer-events:none;-webkit-user-select:none;user-select:none;opacity:.065;width:min(78vw,850px);height:80vh;color:var(--primary,#146b54);contain:strict;position:fixed;top:15vh;right:-5vw}.scroll-chess-background canvas{width:100%;height:100%;display:block}body{isolation:isolate}[data-theme=dark] .scroll-chess-background{opacity:.045}@media (max-width:700px){.scroll-chess-background{opacity:.045;width:110vw;height:58vh;top:24vh;right:-24vw}}@media print{.scroll-chess-background,.scroll-chess{display:none!important}}
:root{--art-shadow:color-mix(in srgb, var(--primary) 52%, black);--art-light:color-mix(in srgb, var(--primary) 15%, white);--art-mid:color-mix(in srgb, var(--primary) 65%, white);--art-outline:color-mix(in srgb, var(--primary) 64%, black);--art-drop-shadow:color-mix(in srgb, var(--primary) 12%, transparent);--art-board-light:color-mix(in srgb, var(--primary) 9%, white);--art-board-dark:color-mix(in srgb, var(--primary) 56%, white);--art-board-ink:color-mix(in srgb, var(--primary) 14%, black);--board-light:color-mix(in srgb, var(--primary) 8%, var(--surface));--board-dark:color-mix(in srgb, var(--primary) 72%, var(--surface));--board-light-label:color-mix(in srgb, var(--primary) 78%, black);--board-dark-label:color-mix(in srgb, var(--on-primary) 80%, white);--piece-light:color-mix(in srgb, white 96%, var(--primary));--piece-light-outline:color-mix(in srgb, var(--primary) 48%, black);--piece-dark:color-mix(in srgb, var(--primary) 18%, black);--piece-dark-outline:color-mix(in srgb, white 88%, var(--primary));--art-image-shadow:color-mix(in srgb, var(--primary) 68%, black);--art-image-light:color-mix(in srgb, var(--primary) 4%, white);--art-image-brightness:1;--art-image-filter:url(#chesssum-artwork-tone) brightness(var(--art-image-brightness))}:root[data-theme=dark]{--art-board-light:color-mix(in srgb, var(--art-light) 82%, var(--surface));--art-board-dark:color-mix(in srgb, var(--primary) 65%, var(--surface));--board-light:color-mix(in srgb, var(--primary) 76%, black);--board-dark:color-mix(in srgb, var(--primary) 14%, var(--surface));--board-light-label:#101010;--board-dark-label:#fffef4;--piece-dark:color-mix(in srgb, var(--text) 16%, black);--art-image-brightness:.82}.artwork-filter-definitions{pointer-events:none;position:absolute;overflow:hidden}.chess-sculpture{--piece-base:var(--primary);--piece-shadow:color-mix(in srgb, var(--piece-base) 52%, black);--piece-light:color-mix(in srgb, var(--piece-base) 15%, white);--piece-mid:color-mix(in srgb, var(--piece-base) 65%, white);--piece-outline:color-mix(in srgb, var(--piece-base) 64%, black)}.theme-artwork,.auth-art{filter:var(--art-image-filter)}
.theme-picker-wrap{position:relative}.palette-panel{border:1px solid var(--border);background:var(--surface);width:370px;max-width:calc(100vw - 24px);color:var(--text);z-index:110;border-radius:20px;max-height:calc(100dvh - 120px);padding:20px;position:absolute;top:calc(100% + 12px);right:0;overflow-y:auto;box-shadow:0 18px 65px #0003}.palette-heading{justify-content:space-between;gap:12px;margin-bottom:18px;display:flex}.palette-heading strong{font-size:16px}.palette-heading p,.palette-help{color:var(--muted);margin-top:5px;font-size:12px}.palette-heading button{min-width:32px;height:32px}.palette-label{margin-bottom:12px;font-size:14px;font-weight:600;display:block}.palette-slider{appearance:none;cursor:ew-resize;border:1px solid var(--text);border-radius:20px;width:100%;height:18px;margin:10px 0}.palette-slider::-webkit-slider-thumb{appearance:none;border:3px solid var(--surface);outline:2px solid var(--text);background:var(--primary);border-radius:50%;width:28px;height:28px;box-shadow:0 2px 6px #0004}.palette-slider::-moz-range-thumb{border:3px solid var(--surface);outline:2px solid var(--text);background:var(--primary);border-radius:50%;width:24px;height:24px}.palette-swatches{grid-template-columns:repeat(5,1fr);gap:6px;margin:16px 0;display:grid}.palette-swatches button{border:1px solid #0000;border-radius:9px;justify-items:center;gap:5px;min-height:52px;padding:7px 1px;display:grid}.palette-swatches button:hover,.palette-swatches button[aria-pressed=true]{background:var(--active);border-color:var(--primary)}.palette-swatches span{border-radius:50%;width:22px;height:22px}.palette-swatches small{font-size:10px}.palette-preview{background:var(--soft);border-radius:12px;justify-content:space-between;align-items:center;padding:12px;font-size:13px;display:flex}.palette-reset{min-height:32px;color:var(--muted);align-items:center;gap:7px;margin-top:12px;font-size:12px;display:flex}@media (max-width:600px){.palette-panel{width:auto;max-width:none;position:fixed;top:90px;left:12px;right:12px}}@media (prefers-reduced-motion:reduce){[data-palette] body{transition:none}}
.appearance-tabs,.holiday-segments{border:1px solid var(--border);background:var(--soft);border-radius:11px;gap:3px;padding:3px;display:flex}.appearance-tabs{z-index:2;background:var(--surface);margin:0 0 16px;position:sticky;top:-20px}.appearance-tabs button,.holiday-segments button{min-height:36px;color:var(--text);border-radius:8px;flex:1;padding:6px 8px;font-size:12px}.appearance-tabs button[aria-pressed=true],.holiday-segments button[aria-pressed=true]{background:var(--active);box-shadow:inset 0 0 0 1px var(--primary);color:var(--text)}.holiday-settings h3{margin:0 0 5px;font-size:16px}.holiday-help{color:var(--muted);margin:8px 0 12px;font-size:12px;line-height:1.6}.holiday-status{color:var(--muted);margin:12px 0;font-size:12px;line-height:1.5}.holiday-actions{flex-wrap:wrap;justify-content:space-between;gap:8px;margin:12px 0;display:flex}.holiday-actions button,.holiday-browse{color:var(--primary);min-height:36px;padding:5px 0;font-size:12px}.holiday-search{gap:7px;margin:12px 0;font-size:12px;font-weight:600;display:grid}.holiday-search input,.holiday-advanced input,.holiday-advanced select{background:var(--bg);width:100%;min-width:0;color:var(--text);border:1px solid var(--border);font:inherit;border-radius:9px;padding:10px}.holiday-groups details{border:1px solid var(--border);border-radius:10px;margin:7px 0;overflow:hidden}.holiday-groups summary,.holiday-advanced summary{cursor:pointer;min-height:44px;padding:12px;font-size:13px;font-weight:600}.holiday-groups summary small{float:right;color:var(--muted);margin-right:8px;font-weight:400}.holiday-group-control{background:var(--soft);flex-direction:row;justify-content:space-between;align-items:center;gap:9px;padding:7px 12px;font-size:12px;display:flex}.holiday-event{border-top:1px solid var(--border);grid-template-columns:minmax(0,1fr) auto auto;justify-content:space-between;align-items:center;gap:7px;padding:8px 12px;display:grid}.holiday-event-name{min-width:0;font-size:12px;line-height:1.5}.holiday-event small{color:var(--muted);margin-top:3px;font-size:10px;line-height:1.4;display:block}.holiday-event .holiday-preview-button{color:var(--primary);min-height:34px;padding:5px;font-size:11px}.holiday-switch{min-height:44px;color:var(--muted);cursor:pointer;background:0 0;border:0;border-radius:9px;flex-direction:row;flex:none;justify-content:flex-end;align-items:center;gap:7px;padding:5px 2px;display:inline-flex}.holiday-switch-word{min-width:19px;font-size:10px;font-weight:600;line-height:1}.holiday-switch-track{border:1px solid var(--border);background:var(--border);border-radius:999px;flex:none;width:38px;height:22px;transition:background-color .14s;display:block;position:relative}.holiday-switch-thumb{background:var(--surface);border-radius:50%;width:14px;height:14px;transition:transform .14s;position:absolute;top:3px;left:3px;box-shadow:0 1px 3px #0003}.holiday-switch[aria-checked=true]{color:var(--primary)}.holiday-switch[aria-checked=true] .holiday-switch-track{background:var(--primary);border-color:var(--primary)}.holiday-switch[aria-checked=true] .holiday-switch-thumb{background:var(--on-primary);transform:translate(16px)}.holiday-switch:focus-visible{outline:2px solid var(--primary);outline-offset:2px}.holiday-switch:disabled{opacity:.4;cursor:not-allowed}.holiday-motion-control{background:0 0;padding-inline:0}.holiday-cards{overscroll-behavior:contain;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;max-height:300px;margin:12px 0;padding:2px;display:grid;overflow:auto}.holiday-cards button{border:1px solid var(--border);background:var(--bg);border-radius:12px;flex-direction:column;justify-content:flex-start;align-items:center;gap:7px;min-height:110px;padding:8px 4px;font-size:10px;line-height:1.35;display:flex;position:relative;overflow:hidden}.holiday-cards button[aria-pressed=true]{outline:2px solid var(--primary);outline-offset:-2px;background:var(--active)}.holiday-card-art{background:linear-gradient(135deg, var(--soft), var(--surface));border-radius:8px;width:100%;height:66px;display:block}.holiday-card-art svg{width:100%;height:100%}.holiday-card-check{width:18px;height:18px;color:var(--on-primary);background:var(--primary);border-radius:50%;place-items:center;font-size:12px;display:grid;position:absolute;top:4px;right:4px}.holiday-control{border-top:1px solid var(--border);justify-content:space-between;align-items:center;gap:12px;margin:12px 0;padding-top:14px;font-size:12px;display:flex}.holiday-control .holiday-segments{flex:1;max-width:220px}.holiday-advanced{border-block:1px solid var(--border);margin:12px 0}.holiday-advanced>label{gap:7px;margin:12px 0;font-size:12px;display:grid}.holiday-advanced>button{min-height:36px;color:var(--primary);font-size:12px}.holiday-advanced summary{padding-inline:0}.holiday-settings a{text-decoration:underline}.palette-panel:has(.holiday-settings){width:420px}.holiday-background{z-index:1;position:fixed;inset:0;overflow:hidden;pointer-events:none!important}.holiday-edge{bottom:max(112px, env(safe-area-inset-bottom));aspect-ratio:1;opacity:.24;width:clamp(48px,6vw,90px);position:absolute;pointer-events:none!important}.holiday-edge[data-slot="0"]{left:clamp(8px,1.8vw,28px)}.holiday-edge[data-slot="1"]{right:clamp(8px,1.8vw,28px)}.holiday-edge>svg{width:100%;height:100%}.holiday-background[data-intensity=festive] .holiday-edge{opacity:.4}.holiday-background[data-quiet=true] .holiday-edge{opacity:.16}.holiday-background[data-motion=true] .holiday-edge{animation:6s ease-in-out infinite alternate holiday-breathe}.holiday-edge[data-slot="1"]{animation-delay:-3s}.holiday-winter-art{width:100%;height:100%;position:relative}.holiday-winter-art>.season-ornament{width:100%;height:100%;position:absolute;inset:0}.holiday-winter-art[data-art=christmas]>.season-menorah,.holiday-winter-art[data-art=hanukkah]>.season-tree{display:none}.holiday-winter-art .season-ornament-body{opacity:1}.holiday-winter-art[data-art=hanukkah][data-hanukkah=false] .season-candle-light{opacity:.28;animation:none}.holiday-winter-art[data-christmas=true] .season-bulb{opacity:1;filter:drop-shadow(0 0 4px)}.holiday-background[data-motion=false] *{animation:none!important}body:has(.chessboard) .holiday-background{display:none}@keyframes holiday-breathe{0%{transform:translateY(0)}to{transform:translateY(-4px)}}@media (prefers-reduced-motion:reduce){.holiday-switch *{transition:none!important}.holiday-background *{animation:none!important}}@media (max-width:600px){.palette-panel:has(.holiday-settings){width:auto}.holiday-edge{opacity:.16;width:44px;bottom:112px}.holiday-background[data-intensity=festive] .holiday-edge{opacity:.24}.holiday-cards{grid-template-columns:repeat(3,minmax(0,1fr));max-height:260px}}body:has(.season-background[data-season=Winter]) .holiday-edge{bottom:calc(max(104px, env(safe-area-inset-bottom)) + clamp(79.2px, 9vw, 136.8px) + 24px)}@media (max-width:700px){body:has(.season-background[data-season=Winter]) .holiday-edge{bottom:calc(max(96px, env(safe-area-inset-bottom)) + 88px)}}.holiday-actions{grid-template-columns:minmax(0,1fr) auto;display:grid}.holiday-actions button,.season-picker>button{border:1px solid var(--primary);background:var(--soft);min-height:44px;color:var(--text);cursor:pointer;border-radius:10px;padding:10px 14px;font-weight:600;line-height:1.4}.holiday-actions button:first-child{background:var(--primary);color:var(--on-primary)}.holiday-actions button:hover,.season-picker>button:not(:disabled):hover{box-shadow:0 0 0 2px var(--active);filter:brightness(.96)}.holiday-actions button:focus-visible,.season-picker>button:focus-visible{outline:2px solid var(--primary);outline-offset:3px}.season-picker>button{width:100%}.season-picker>button:disabled{opacity:.5;cursor:default}.season-picker>label{flex-direction:row;align-items:center;gap:8px}.season-picker>label input{width:auto;min-height:auto;margin:0}
.season-background{pointer-events:none;z-index:1;color:#87a9ba;position:fixed;inset:0;overflow:hidden}.season-background>.season-canvas,.season-ornament-body{opacity:.38}.season-background>.season-canvas{width:100%;height:100%}.season-background>.season-ornament{bottom:max(104px, env(safe-area-inset-bottom));width:clamp(44px,5vw,76px);height:auto;position:absolute;overflow:visible}.season-tree{left:clamp(10px,2vw,32px)}.season-background>.season-menorah{width:clamp(52px,6vw,88px);right:clamp(10px,2vw,32px)}.season-background[data-night=true]{color:#d8e8fa}.season-background[data-night=true]>.season-canvas,.season-background[data-night=true] .season-ornament-body{opacity:.48}.season-bulb{opacity:.55;filter:drop-shadow(0 0 1px);animation:3.8s ease-in-out infinite alternate season-tree-shimmer}.season-candle-light{filter:drop-shadow(0 0 2px #ffc25b);animation:2.6s ease-in-out infinite alternate season-lamp-shimmer}.season-background[data-christmas=true] .season-bulb{opacity:1;filter:drop-shadow(0 0 4px)drop-shadow(0 0 7px);animation-name:season-christmas-shimmer}@keyframes season-tree-shimmer{0%{opacity:.35}to{opacity:.65}}@keyframes season-christmas-shimmer{0%{opacity:.85}to{opacity:1}}@keyframes season-lamp-shimmer{0%{opacity:.78}to{opacity:1}}.season-drift{animation:25s linear infinite season-drift}.season-glow{animation:5s ease-in-out infinite alternate season-glow}@keyframes season-drift{0%{transform:translateY(-100px)}50%{transform:translate(18px)}to{transform:translateY(110px)}}@keyframes season-glow{to{opacity:.45}}.season-background[data-motion=false] *{animation:none!important}.season-picker{border-top:1px solid var(--border);margin:14px 0;padding-top:14px}.season-picker>div{grid-template-columns:repeat(4,minmax(0,1fr));gap:6px;margin:10px 0;display:grid}.season-picker>div button{border:1px solid var(--border);border-radius:12px;justify-items:center;gap:4px;padding:8px 2px;font-size:12px;display:grid}.season-picker button[aria-pressed=true]{background:var(--active);outline:2px solid var(--primary)}.season-picker span{font-size:22px}.season-picker>label{align-items:center;gap:8px;margin-right:12px;display:inline-flex}.season-picker>button{color:var(--muted);font-size:12px}@media (prefers-reduced-motion:reduce){.season-background *{animation:none!important}}@media (max-width:700px){.season-background>.season-ornament{width:36px;bottom:max(96px, env(safe-area-inset-bottom))}.season-background>.season-menorah{width:44px}.season-drift:nth-child(n+15){display:none}.season-background>.season-canvas,.season-background .season-ornament-body{opacity:.25}}.season-background[data-hanukkah=false] .season-candle-light{opacity:.28;filter:drop-shadow(0 0 1px #ffc25b);animation-name:season-candle-dim}@keyframes season-candle-dim{0%{opacity:.2}to{opacity:.35}}